
These tools are web-based and text-based, but they're not built into GitHub, so you still need to render images and add the images to GitHub to reference them. More recently, I've used PlantUML for the same kind of thing, as shown here. In the past when I've wanted to include a simple diagram in a GitHub README file, I've used WebGraphViz.

State Diagrams with Mermaid and WebGraphViz Below is an example sequence diagram from the mermaid docs: TD is "Top Down" and is the same as TB.Īlthough my blog is written in markdown, I haven't set up support for mermaid in it (yet), so the examples here will use screenshots. Note that you can give hints to the diagram type like TB for "Top to Bottom" using something like graph TB.
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Note that the syntax is not consistent between types, so if you know how to draw an arrow with a label using the flowchart syntax, you'll find you'll need a different approach to perform the same task in a stateDiagram-v2 diagram. Once you've specified the diagram type you're then free to describe your diagram using a grammar specific to the type. Then, you need to specify what kind of diagram you're creating on the first line. To get started using Mermaid all you need to do is create a code-fenced area using triple-backtick syntax and specify that your language is mermaid. I've solved this problem in other ways in the past and in this article I'll show how to get started using Mermaid in your GitHub projects and how it compares to other approaches. The new feature leverages the Mermaid diagramming and charting tool, which is JavaScript-based and supports many common diagram formats. GitHub recently announced support for diagrams embedded directly in markdown files.
